GET: /report internal error unsupported operand type(s) +: 'NoneType' and 'str'

[ciprian.parfon@…]

Hello

When I try to 'View Tickets' I get:

Oops…
Trac detected an internal error:

TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'

There was an internal error in Trac. It is recommended that you notify your local
Trac administrator with the information needed to reproduce the issue.

To that end, you could a ticket.

The action that triggered the error was:

GET: /report

Here's the details of my setup:

Most recent call last:
File "/usr/lib64/python2.7/site-packages/trac/ticket/templates/report_list.html", line 99, in
File "/usr/lib64/python2.7/site-packages/trac/wiki/formatter.py", line 1546, in format_to_html
File "/usr/lib64/python2.7/site-packages/trac/wiki/formatter.py", line 1501, in generate
File "/usr/lib64/python2.7/site-packages/trac/wiki/formatter.py", line 1283, in format
File "/usr/lib64/python2.7/re.py", line 151, in sub
File "/usr/lib64/python2.7/site-packages/trac/wiki/formatter.py", line 1201, in replace
File "/usr/lib64/python2.7/site-packages/trac/wiki/formatter.py", line 1197, in handle_match
File "/usr/lib64/python2.7/site-packages/trac/wiki/formatter.py", line 591, in _lhref_formatter
File "/usr/lib64/python2.7/site-packages/trac/wiki/formatter.py", line 621, in _make_lhref_link
File "/usr/lib64/python2.7/site-packages/trac/wiki/formatter.py", line 656, in _make_link
File "/usr/lib64/python2.7/site-packages/trac/wiki/formatter.py", line 661, in _make_intertrac_link
File "/usr/lib64/python2.7/site-packages/trac/wiki/formatter.py", line 667, in get_intertrac_url

Trac 1.0.1
Docutils 0.10
Genshi 0.7 (with speedups)
mod_wsgi 3.4 (WSGIProcessGroup svn WSGIApplicationGroup %{GLOBAL})
Pygments 1.6
pysqlite 2.6.0
Python 2.7.5 (default, Nov 26 2013, 18:44:35) [GCC 4.6.3]
pytz 2013d
setuptools 0.8
SQLite 3.8.2
Subversion 1.7.14 (r1542130)
jQuery 1.4.2

Enabled Plugins:

TracAccountManager 0.4.2 /usr/lib64/python2.7/site-packages